#region The MIT License
// The MIT License
// 
// Copyright (c) 2009 octalforty studios
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#endregion
using System;
using System.ComponentModel.Composition;
using System.IO;

namespace octalforty.Componento.ComponentModel.Installation.FileSystem
{
    [Export(typeof(IFileSystemManagerService))]
    public class FileSystemManagerService : IFileSystemManagerService
    {
        #region IFileSystemManagerService Members
        /// <summary>
        /// Gets the current working directory of the application.
        /// </summary>
        public string CurrentDirectory
        {
            get { return Directory.GetCurrentDirectory(); }
        }

        /// <summary>
        /// Gets path to a temp directory.
        /// </summary>
        public string TempDirectory
        {
            get { return Environment.ExpandEnvironmentVariables("%TEMP%"); }
        }

        /// <summary>
        /// Copies <paramref name="sourceFilePath"/> to <paramref name="destinationFilePath"/>.
        /// </summary>
        /// <param name="sourceFilePath"></param>
        /// <param name="destinationFilePath"></param>
        public void CopyFile(string sourceFilePath, string destinationFilePath)
        {
            File.Copy(sourceFilePath, destinationFilePath);
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public bool FileExists(string path)
        {
            return File.Exists(path);
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public bool DirectoryExists(string path)
        {
            return Directory.Exists(path);
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="sourcePath"></param>
        /// <param name="destinationPath"></param>
        public void CopyDirectory(string sourcePath, string destinationPath)
        {
            CopyDirectoryRecursive(new DirectoryInfo(sourcePath), new DirectoryInfo(destinationPath));
        }

        public Stream OpenFile(string path)
        {
            return File.OpenRead(path);
        }

        /// <summary>
        /// Creates all directories and subdirectories as specified by <paramref name="path"/>.
        /// </summary>
        /// <param name="path"></param>
        public void CreateDirectory(string path)
        {
            Directory.CreateDirectory(path);
        }

        /// <summary>
        /// Deletes the specified directory and any subdirectories in the directory.
        /// </summary>
        /// <param name="path"></param>
        public void DeleteDirectory(string path)
        {
            Directory.Delete(path, true);
        }

        /// <summary>
        /// Creates a file in the specified <paramref name="path"/>.
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public FileStream CreateFile(string path)
        {
            return File.Create(path);
        }

        /// <summary>
        /// Deletes the specified file.
        /// </summary>
        /// <param name="path"></param>
        public void DeleteFile(string path)
        {
            File.Delete(path);
        }
        #endregion

        public void CopyDirectoryRecursive(DirectoryInfo source, DirectoryInfo target)
        {
            foreach(DirectoryInfo directory in source.GetDirectories())
                CopyDirectoryRecursive(directory, target.CreateSubdirectory(directory.Name));

            foreach(FileInfo file in source.GetFiles())
                file.CopyTo(Path.Combine(target.FullName, file.Name), true);
        }
    }
}
